Learn about cork, a wonderful material for small parrots toys (not that the big ones don't love to chew on it, too!). Try getting a 'sheet', roll it up stuffing it with raffia or any other type of dry grass material that has not been treated with anything, tie it with some sisal rope (frazzle the ends and leave them hanging, the birds love to pick on them, too) and hang the 'package' from the top of the cage.
https://www.zmescience.com/ecology/gree ... tles-with/